CN111771468A - Roller assembly for precise plug seeding equipment - Google Patents

Abstract

The invention discloses a roller assembly for precision plug seeding equipment, and relates to the technical field of agricultural machinery. The invention comprises a pair of negative pressure boxes arranged side by side; a roller is rotatably arranged between the two negative pressure boxes; a plurality of groups of seed suction holes are axially formed in the outer wall of the roller; two ends of the roller respectively penetrate and extend into the two negative pressure boxes; a bearing strip is axially arranged in the roller; a positive pressure air conveying passage is arranged in the bearing strip along the length direction; the lower surface of the bearing strip is provided with a plurality of positive pressure air blowing holes corresponding to the seed suction holes along the length direction; the positive pressure air blowing hole is communicated with the positive pressure air conveying channel; the two ends of the bearing strip penetrate out of the roller and respectively extend into the two negative pressure boxes, and a positive pressure box is fixed inside the bearing strip and communicated with the positive pressure gas transmission channel. The invention has simple and reasonable structural design and convenient use, effectively improves the seeding efficiency and has higher market application value.

Description

Roller assembly for precise plug seeding equipment

Technical Field

The invention belongs to the technical field of agricultural machinery, and particularly relates to a roller assembly for precision plug seeding equipment.

Background

In the process of seedling raising of seeds, sowing is an important basic link. The seeding device is the premise and the foundation for realizing the transplanting and the cultivation of crops, can ensure that the seedling production achieves high quality and high efficiency, improves the purity and the survival rate of the seedling species, and is beneficial to the stable and rapid development of the seedling industry. With the rapid development of agricultural machinery technology in China, higher requirements are put forward on seeding and seedling raising technology, and the quality of the performance of a seeding device directly influences the quality and the growth condition of seedlings.

At present, most of precision seeding equipment for plug seedling in the prior art adopts a drum-type seeding mode. For example, patent document No. CN105723887B entitled air-suction vibration drum-type precision seeding device includes a seeding frame, a drum device, a transmission device, a positive and negative pressure air supply device and a seed box device, wherein the drum device is connected to a support through screws, the transmission device is located on an upper rack, the positive and negative pressure air supply device is located on the upper rack, and the seed box device is connected to the upper rack through screws; although the seed suction action can be realized, the structural design is very complex, and the seed suction effect and the seeding efficiency are difficult to effectively ensure. Therefore, there is a need to develop a roller assembly for a precision plug seeding apparatus in order to solve the above problems.

Disclosure of Invention

The present invention is directed to a roller assembly for precision plug seeding apparatus that solves the above-mentioned problems of the prior art.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a roller assembly for precision plug seeding equipment, which comprises a pair of negative pressure boxes arranged side by side; a roller is rotatably arranged between the two negative pressure boxes; a plurality of groups of seed suction holes are axially formed in the outer wall of the roller; two ends of the roller respectively penetrate and extend into the two negative pressure boxes; a bearing strip is axially arranged in the roller; a positive pressure air conveying passage is formed in the bearing strip along the length direction; the lower surface of the bearing strip is provided with a plurality of positive pressure air blowing holes corresponding to the seed suction holes along the length direction; the positive pressure air blowing hole is communicated with the positive pressure air conveying channel; two ends of the bearing strip penetrate through the roller and respectively extend into the two negative pressure boxes, and a positive pressure box with the interior communicated with the positive pressure gas transmission channel is fixed on each bearing strip; a positive pressure air supply tank is arranged above the positive pressure box; a fixing column is vertically inserted into the bottom wall of the positive pressure air supply tank; the lower end of the fixing column is fixedly inserted into the positive pressure box; a plurality of air supply holes are axially formed in the fixing column; the interior of the positive pressure air supply tank is communicated with the interior of the positive pressure box through an air supply hole; the middle part of the positive pressure air supply tank is provided with an external expansion part; a guide rod is vertically arranged inside the positive pressure air supply tank; a piston is fixed on the guide rod; the upper end of the guide rod penetrates through the top wall of the positive pressure air supply tank and the top wall of the negative pressure box in sequence and is connected to the output end of a telescopic component; the telescopic component is fixed on the top wall of the negative pressure box; the telescopic part drives the guide rod to move downwards, so that the piston moves to the outward-expanding part and generates a gap with the outward-expanding part, and the lower port of the positive-pressure air blowing hole is abutted against the upper port of the seed suction hole, so that positive-pressure air at the top of the positive-pressure air supply tank is conveyed into the seed suction hole; the upper surface of the fixed column is axially provided with a mounting hole; a tension spring is arranged in the mounting hole; the upper end of the tensioning spring is connected with the lower end of the guide rod; the positive pressure air supply tank is in sliding fit with the fixing column; the lower end of the outward expansion part is provided with a limiting step surface corresponding to the piston; when the piston moves downwards to the surface of the limit step, the positive pressure air supply tank and the piston move synchronously; the two positive pressure air supply tanks are connected through a movable strip; the movable strip and the bearing strip are arranged in parallel; a plurality of impurity cleaning needles corresponding to the seed suction holes are vertically fixed on the lower surface of the movable strip side by side along the length direction; the lower end of the impurity removing needle penetrates and extends into the positive pressure gas transmission passage; when the positive pressure air supply tank moves downwards, the lower end of the impurity cleaning needle penetrates through the positive pressure air blowing hole and is inserted into the seed suction hole, and therefore the purpose of cleaning impurities is achieved.

Furthermore, an outer gear ring is fixedly sleeved at one end of the roller; a transmission gear is meshed on the outer gear ring; the transmission gear is fixed on an output shaft of a driving motor; the outer gear ring, the transmission gear and the driving motor are all arranged inside a negative pressure box.

The invention has the following beneficial effects:

according to the seed sowing device, the roller provided with the plurality of groups of seed suction holes is rotatably arranged between the two negative pressure boxes, seeds in the seed boxes are sucked into the seed suction holes by rotating the roller, the piston is driven by the telescopic component to move downwards, so that the lower end ports of the positive pressure air blowing holes are abutted against the upper end ports of the seed suction holes, positive pressure air at the tops of the positive pressure air supply tanks is conveyed into the seed suction holes, and then the purpose of seed sowing is achieved.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a roller assembly for a precision plug seeding apparatus according to the present invention;

FIG. 2 is a front view of the structure of FIG. 1;

FIG. 3 is a side view of the structure of FIG. 1;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 5 is a schematic structural diagram of a first embodiment of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-base station, 2-side supporting plate, 3-power conveying belt, 4-plug tray, 5-negative pressure box, 6-roller, 7-seed box, 8-carrying strip, 9-positive pressure box, 10-positive pressure air supply tank, 11-fixed column, 12-guide rod, 13-piston, 14-telescopic part, 15-movable strip, 16-impurity removing needle, 601-seed sucking hole, 801-positive pressure air conveying channel, 802-positive pressure air blowing hole, 1101-air supply hole and 1102-tension spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention is a roller assembly for precision plug seeding equipment, comprising a pair of negative pressure boxes 5 arranged side by side; a roller 6 is rotatably arranged between the two negative pressure boxes 5; a plurality of groups of seed sucking holes 601 are axially formed in the outer wall of the roller 6; two ends of the roller 6 respectively penetrate and extend into the two negative pressure boxes 5; a bearing strip 8 is axially arranged in the roller 6; a positive pressure air transmission channel 801 is formed in the carrying strip 8 along the length direction; the lower surface of the carrying strip 8 is provided with a plurality of positive pressure air blowing holes 802 corresponding to the seed suction holes 601 along the length direction; the positive pressure air blowing hole 802 is communicated with the positive pressure air conveying passage 801; two ends of the carrying strip 8 penetrate through the roller 6 and respectively extend into the two negative pressure boxes 5, and a positive pressure box 9 with the interior communicated with the positive pressure air conveying passage 801 is fixed on each of the two ends; a positive pressure air supply tank 10 is arranged above the positive pressure box 9; a fixing column 11 is vertically inserted into the bottom wall of the positive pressure air supply tank 10; the lower end of the fixing column 11 is fixedly inserted into the positive pressure box 9; a plurality of air supply holes 1101 are axially formed on the fixing column 11; the inside of the positive pressure air supply tank 10 communicates with the inside of the positive pressure case 9 through an air supply hole 1101; the middle part of the positive pressure air supply tank 10 is provided with an external expansion part; a guide rod 12 is vertically arranged inside the positive pressure air supply tank 10; a piston 13 is fixed on the guide rod 12; the upper end of the guide rod 12 penetrates through the top wall of the positive pressure air supply tank 10 and the top wall of the negative pressure box 5 in sequence and is connected to the output end of a telescopic component 14; the telescopic component 14 is fixed on the top wall of the negative pressure box 5; the telescopic part 14 drives the guide rod 12 to move downwards, so that the piston 13 moves to the outward expansion part and forms a gap with the outward expansion part, and the lower port of the positive pressure air blowing hole 802 is abutted against the upper port of the seed suction hole 601, and positive pressure air at the top of the positive pressure air supply tank 10 is conveyed into the seed suction hole 601; the upper surface of the fixed column 11 is axially provided with a mounting hole; a tension spring 1102 is arranged in the mounting hole; the upper end of the tension spring 1102 is connected with the lower end of the guide rod 12; the positive pressure air supply tank 10 is in sliding fit with the fixing column 11; the lower end of the outward expansion part is provided with a limiting step surface corresponding to the piston 13; when the piston 13 moves downwards to the surface of the limit step, the positive pressure air supply tank 10 and the piston 13 move synchronously; the two positive pressure air supply tanks 10 are connected through a movable strip 15; the movable strip 15 is arranged in parallel with the bearing strip 8; a plurality of impurity cleaning needles 16 corresponding to the seed suction holes 601 are vertically fixed on the lower surface of the movable strip 15 side by side along the length direction; the lower end of the impurity removing needle 16 extends into the positive pressure gas transmission channel 801; when the positive pressure air supply tank 10 moves downwards, the lower end of the impurity cleaning needle 16 passes through the positive pressure air blowing hole 802 and is inserted into the seed suction hole 601, so that the purpose of cleaning impurities is achieved.

Wherein, one end of the roller 6 is fixedly sleeved with an outer gear ring; a transmission gear is meshed on the outer gear ring; the transmission gear is fixed on an output shaft of a driving motor; the outer gear ring, the transmission gear and the driving motor are all arranged inside a negative pressure box 5.

As shown in fig. 5, the roller assembly of the present invention is mounted on a precision plug seeding apparatus, which comprises a base 1; a pair of side supporting plates 2 are fixed on the upper surface of the base 1 in parallel; a power conveyer belt 3 is arranged between the two side supporting plates 2; a hole disc 4 is arranged on the power conveying belt 3; a negative pressure box 5 is fixed on the upper parts of the two side supporting plates 2; the negative pressure box 5 can be connected with a negative pressure fan through a negative pressure air supply pipe, so that a negative pressure state is formed inside the negative pressure box 5; a roller 6 is rotatably arranged between the two negative pressure boxes 5; a seed box 7 with an opening structure at the lower part is fixed above the roller 6; an opening at the lower part of the seed box 7 is abutted against the outer wall of the roller 6; a plurality of groups of seed sucking holes 601 are axially formed in the outer wall of the roller 6; by rotating the roller 6, the seeds in the seed box 7 are sucked into the seed suction hole 601;

two ends of the roller 6 respectively penetrate and extend into the two negative pressure boxes 5; a bearing strip 8 is axially arranged in the roller 6; a positive pressure air transmission channel 801 is formed in the carrying strip 8 along the length direction; the lower surface of the carrying strip 8 is provided with a plurality of positive pressure air blowing holes 802 corresponding to the seed suction holes 601 along the length direction; the lower port of the positive pressure air blowing hole 802 is arranged downwards; the positive pressure air blowing hole 802 is communicated with the positive pressure air conveying passage 801; the lower surface of the bearing strip 8 is of an arc structure, and the lower surface of the bearing strip 8 can be attached to the inner side wall of the roller 6; two ends of the carrying strip 8 penetrate through the roller 6 and respectively extend into the two negative pressure boxes 5, and a positive pressure box 9 with the interior communicated with the positive pressure air conveying passage 801 is fixed on each of the two ends; a positive pressure air supply tank 10 is arranged above the positive pressure box 9; the top of the positive pressure air supply tank 10 can be connected with a positive pressure fan through a positive pressure air supply pipe, so that the top of the positive pressure air supply tank 10 is in a positive pressure state; a fixing column 11 is vertically inserted into the bottom wall of the positive pressure air supply tank 10;

the lower end of the fixing column 11 is fixedly inserted into the positive pressure box 9; a plurality of air supply holes 1101 are axially formed on the fixing column 11; the inside of the positive pressure air supply tank 10 communicates with the inside of the positive pressure case 9 through an air supply hole 1101; the middle part of the positive pressure air supply tank 10 is provided with an outward expansion part in a conical structure; a guide rod 12 is vertically arranged inside the positive pressure air supply tank 10; a piston 13 is fixed on the guide rod 12; the upper end of the guide rod 12 penetrates through the top wall of the positive pressure air supply tank 10 and the top wall of the negative pressure box 5 in sequence and is connected to the output end of a telescopic component 14; the telescopic part 14 is a hydraulic cylinder; the telescopic component 14 is fixed on the top wall of the negative pressure box 5; the telescopic part 14 drives the guide rod 12 to move downwards, so that the piston 13 moves to the outward expansion part and forms a gap with the outward expansion part, and the lower port of the positive pressure air blowing hole 802 is abutted against the upper port of the seed suction hole 601, so that positive pressure air at the top of the positive pressure air supply tank 10 is conveyed into the seed suction hole 601, and the purpose of seeding is further achieved;

the upper surface of the fixed column 11 is axially provided with a mounting hole; a tension spring 1102 is arranged in the mounting hole; the upper end of the tension spring 1102 is connected with the lower end of the guide rod 12; the lower end of the tension spring 1102 is connected with the bottom wall of the mounting hole; the positive pressure air supply tank 10 is in sliding fit with the fixing column 11; the lower end of the outward expansion part is provided with a limiting step surface corresponding to the piston 13; when the piston 13 moves downwards to the surface of the limit step, the positive pressure air supply tank 10 and the piston 13 move synchronously; the two positive pressure air supply tanks 10 are connected through a movable strip 15; the movable strip 15 is arranged in parallel with the bearing strip 8; a plurality of impurity cleaning needles 16 corresponding to the seed suction holes 601 are vertically fixed on the lower surface of the movable strip 15 side by side along the length direction; the lower end of the impurity removing needle 16 extends into the positive pressure gas transmission channel 801; when the positive pressure air supply tank 10 moves downwards, the lower end of the impurity cleaning needle 16 vertically penetrates through the positive pressure air blowing hole 802 and is inserted into the seed suction hole 601, so that the purpose of cleaning impurities is achieved.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (2)

1. A roller assembly for precision plug seeding equipment, characterized by comprising a pair of negative pressure boxes (5) arranged side by side; a roller (6) is rotatably arranged between the two negative pressure boxes (5); a plurality of groups of seed suction holes (601) are axially formed in the outer wall of the roller (6);

two ends of the roller (6) respectively penetrate and extend into the two negative pressure boxes (5); a bearing strip (8) is axially arranged in the roller (6); a positive pressure air conveying passage (801) is formed in the bearing strip (8) along the length direction; the lower surface of the carrying strip (8) is provided with a plurality of positive pressure air blowing holes (802) corresponding to the seed suction holes (601) along the length direction; the positive pressure air blowing hole (802) is communicated with the positive pressure air conveying passage (801);

two ends of the carrying strip (8) penetrate through the roller (6) and respectively extend into the two negative pressure boxes (5), and a positive pressure box (9) with the interior communicated with the positive pressure air conveying passage (801) is fixed on each of the two ends; a positive pressure air supply tank (10) is arranged above the positive pressure box (9); a fixing column (11) is vertically inserted into the bottom wall of the positive pressure air supply tank (10); the lower end of the fixing column (11) is fixedly inserted into the positive pressure box (9);

a plurality of air supply holes (1101) are axially formed in the fixing column (11); the interior of the positive pressure air supply tank (10) is communicated with the interior of the positive pressure box (9) through an air supply hole (1101); the middle part of the positive pressure air supply tank (10) is provided with an outward expansion part; a guide rod (12) is vertically arranged in the positive pressure air supply tank (10); a piston (13) is fixed on the guide rod (12); the upper end of the guide rod (12) penetrates through the top wall of the positive pressure air supply tank (10) and the top wall of the negative pressure box (5) in sequence and is connected to the output end of a telescopic component (14);

the telescopic component (14) is fixed on the top wall of the negative pressure box (5); the telescopic component (14) drives the guide rod (12) to move downwards, so that the piston (13) moves to the outward expansion part and generates a gap with the outward expansion part, and the lower port of the positive pressure air blowing hole (802) is abutted against the upper port of the seed suction hole (601), and positive pressure air at the top of the positive pressure air supply tank (10) is conveyed into the seed suction hole (601);

the upper surface of the fixed column (11) is axially provided with a mounting hole; a tension spring (1102) is arranged in the mounting hole; the upper end of the tension spring (1102) is connected with the lower end of the guide rod (12); the positive pressure air supply tank (10) is in sliding fit with the fixing column (11); the lower end of the outward expansion part is provided with a limiting step surface corresponding to the piston (13); when the piston (13) moves downwards to the surface of the limit step, the positive pressure air supply tank (10) and the piston (13) move synchronously;

the two positive pressure air supply tanks (10) are connected through a movable strip (15); the movable strip (15) and the carrying strip (8) are arranged in parallel; a plurality of impurity cleaning needles (16) corresponding to the seed suction holes (601) are vertically fixed on the lower surface of the movable strip (15) side by side along the length direction; the lower end of the impurity removing needle (16) penetrates and extends into the positive pressure gas transmission channel (801); when the positive pressure air supply tank (10) moves downwards, the lower end of the impurity cleaning needle (16) penetrates through the positive pressure air blowing hole (802) and is inserted into the seed sucking hole (601), and therefore the purpose of cleaning impurities is achieved.

2. The roller assembly for the precision plug seeding equipment according to claim 1, wherein an outer toothed ring is fixedly sleeved on one end of the roller (6); a transmission gear is meshed on the outer gear ring; the transmission gear is fixed on an output shaft of a driving motor; the outer gear ring, the transmission gear and the driving motor are all arranged inside a negative pressure box (5).

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